BUGEN1502 Business Statistics - Confidence Interval And Hypothesis Testing Assignment 2

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Question 3 (4 marks)

In the past it has been found that the arrival time have a population mean value of μ = 13 days. Assume that the population standard deviation is unknown. The significance level alpha is set at 5%.

  1. The research wants to know whether this mean has changed. Test the hypothesis with the critical value approach.
  2. The research wants to know whether the mean is more than 13 days. Test the hypothesis with p value approach.

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